Can I calculate magnetic force of a magnet?

by hadroneater
Tags: force, magnet, magnetic
hadroneater is offline
Feb16-09, 10:24 PM
P: 59
Is there a way of calculating how much force can be applied to an object if you are given the magnetic field strength of an electromagnetic?

For example, if an electromagnet produces a B field of 4T, what is the maximum mass of iron it can hold?

And also, how does one calculate the magnetic field outside of a solenoid?

*edit* It seems that I may have another question...*sigh*

If I wrap wires around an iron core like a solenoid to make an electromagnet, would its magnetic strength decrease or increase if I increase the radius of the core? How would I maximize the strength other than having more turns of wires?
Phys.Org News Partner Physics news on
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser
jerio_angus is offline
May24-09, 12:10 PM
P: 1
try this address it should help u to calculate

the strength which is produce by the magnetic field.
Bob S
Bob S is offline
May24-09, 04:39 PM
P: 4,664
I was working on a 30 ton electromagnet with a 12,000 Gauss (1.2 Tesla) field, and lots of fringe field. A grad student wheeled by a large gas bottle of CO2, which the magnet snatched and broke off the pressure regulator. We could not remove it without turning off the current. If you put an octegenarian on O2 in a 4T MRI (NMR) solenoid, the flying O2 bottle will crush him.

rahil is offline
May25-09, 12:20 PM
P: 2

Can I calculate magnetic force of a magnet?

To increase the strength of the electromagnet, just, increase the number of winof the solenoid.

Register to reply

Related Discussions
Given magnetic field, particle charge, and force (vector)... Calculate velocity? Advanced Physics Homework 7
Amount of force 1 magnet with"x"electric energy can create against an opposing magnet Classical Physics 1
Induction of a coil and force exerted on magnet in a magnetic field Classical Physics 1
what make the magnet to be magnet with magnetic field? General Physics 23
calculate pull force of magnet? General Physics 6